News
- Paleontology
Wings Aplenty: Dinosaur species had feathered hind limbs
A team of Chinese paleontologists has discovered fossils of a small, feathered dinosaur that they say had four wings.
- Earth
Estrogens classified as carcinogens
The sex hormones known as steroidal estrogens, which are used in hormone-replacement therapies and birth control pills, have joined a government list of known human carcinogens.
-
Goodnight moon, hello Mom
A national study finds that about 13 percent of U.S. infants now routinely sleep in a bed with their mothers or other adults, intensifying interest in alleged health benefits and risks of bed sharing for babies.
- Astronomy
Sundancing
Astronomers have solved the mystery of why supergranules—enormous cells of turbulent, charged gas on the sun's surface—appear to move across the sun faster than the sun rotates.
